From 436aca8dfe409c1f974aa68b559e1eb06b0aaf50 Mon Sep 17 00:00:00 2001
From: millert <millert@openbsd.org>
Date: Sun, 10 Jul 2016 00:48:21 +0000
Subject: [PATCH] Document that SIGTTOU is sent if the process is in the
 background. Adapted from text from tcsetattr(3).

---
 lib/libc/termios/tcsetpgrp.3 | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/libc/termios/tcsetpgrp.3 b/lib/libc/termios/tcsetpgrp.3
index f72c77aab68..db5e45c014a 100644
--- a/lib/libc/termios/tcsetpgrp.3
+++ b/lib/libc/termios/tcsetpgrp.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: tcsetpgrp.3,v 1.12 2015/11/20 18:10:37 tb Exp $
+.\"	$OpenBSD: tcsetpgrp.3,v 1.13 2016/07/10 00:48:21 millert Exp $
 .\"
 .\" Copyright (c) 1991 The Regents of the University of California.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 20 2015 $
+.Dd $Mdocdate: July 10 2016 $
 .Dt TCSETPGRP 3
 .Os
 .Sh NAME
@@ -53,6 +53,16 @@ The value of
 must be the same as the process group ID of a process in the same
 session as the calling process.
 .Pp
+If the calling process is a member of a background process group,
+the process group will be sent a
+.Dv SIGTTOU
+signal.
+If the calling process is blocking or ignoring
+.Dv SIGTTOU
+signals, the process is allowed to perform the operation and the
+.Dv SIGTTOU
+signal is not sent.
+.Pp
 Upon successful completion,
 .Fn tcsetpgrp
 returns a value of zero.
-- 
2.20.1